The product is produce according national standard GB1863-89（H001-02).The
chemical component is (Fe2O3). It is widely used in making paint,coating,plastic,rubber,ect.
ITEM
|
INDEX |
|
First grade |
Qualified grade |
|
colour （ compared with that of the standard sample ）
|
similar to
|
slightly different shade
|
|
Fe2O3 content （%
m/m） |
≥94 |
≥90 |
|
Matter volatile at 105 ℃
（%
m/m） |
≤1.0 |
≤1.5 |
|
Matter soluble in water （%
m/m） |
≤0.3 |
≤0.5 |
|
Residue on 63 μ m sieve （63μm）（%
m/m） |
≤0.3 |
≤0.5 |
|
Oil absorption （g/100g） |
15～25 |
15～25 |
|
PH of aqueous suspension |
5～7 |
5～7 |
|
Chloride & sulphate （%
m/m） |
≤0.2 |
≤0.3 |
|
Relative coloring power(compared with that of the standard sample) % |
95 |
90 |
|
Covering power g/m |
≤10 |
≤10 |
|
